9. You have $9,500 and will invest the money at an interest rate of .30 percent per month until the account is worth $15,400. How many years do you have to wait until you reach your target account value?

10.Your sister just deposited $11,500 into an investment account. She believes that she will earn an annual return of 10 percent for the next 7 years. You believe that you will only be able to earn an annual return of 9.2 percent over the same period. How much more must you deposit today in order to have the same amount as your sister in 7 years?